Cesium carbonate → 7-iodo-1-(2-methoxyethyl)-1H-pyrazolo[4,3-b]pyridine

Beteiligte Stoffe

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Reaktionsschritte

7-Iodo-2H-pyrazolo[4,3-b]pyridine (100 mg, 0.408 mmol), 1-bromo-2-methoxyethane (56.7 mg, 0.408 mmol) and cesium carbonate (266 mg, 0.816 mmol) were combined in DMF (5 mL). The mixture was heated at 120° C. for 1 hour, then cooled and purified by preparative HPLC using a Phenomenex Gemini Prep 5 μm C18, 75×30 mm column eluting with a gradient of 20-70% 10 mmol NH4HCO3 in 20/80 (v/v) water/acetonitrile in 10 mmol NH4HCO3 in water to give 7-iodo-2-(2-methoxyethyl)-2H-pyrazolo[4,3-b]pyridine (30 mg, 24.25% yield) and 7-iodo-1-(2-methoxyethyl)-1H-pyrazolo[4,3-b]pyridine (30 mg, 24.25% yield). MS [M+H] found 304.1.

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